Anomalous temperature dependence of the magnetic field induced antiferromagnetic moment in the antiferroquadrupolar ordered state of CeB6

被引：35
|
作者：
Sera, M [1 ]
Ichikawa, H
Yokoo, T
Akimitsu, J
Nishi, M
Kakurai, K
Kunii, S
机构：
[1] Hiroshima Univ, Dept Quantum Matter, ADSM, Higashihiroshima 7398526, Japan
[2] Aoyama Gakuin Univ, Dept Phys, Setagaya Ku, Tokyo 1578572, Japan
[3] Univ Tokyo, Neutron Scattering Lab, ISSP, Tokai, Ibaraki 3191106, Japan
[4] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan
来源：
PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 08期
关键词：
D O I：
10.1103/PhysRevLett.86.1578
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The magnetic field induced antiferromagnetic moment M-AF at low magnetic fields in the antiferro-quadrupolar (AFQ) ordered phase of CeB6 was investigated by elastic neutron diffraction experiments for H parallel to [110]. The peak intensity at the AF magnetic reciprocal point (1/2, 1/2, 1/2) corresponding to M-AF(2) increases with decreasing temperature below the AFQ ordering temperature T-Q, and exhibits a broad maximum at T similar to 3 K and decreases with a further decrease of temperature. This unusual behavior of MF at low fields is explained as a result of the competition between the AF-octupolar and AF-exchange interactions in the O-xy type AFQ ordered state.
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页码：1578 / 1581
页数：4
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